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A novel non-pickling combination tanning for chrome-free leather based on reactive benzesulphonate and tannic acid / Yuanhang Xiao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 1 (01/2020)
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Titre : A novel non-pickling combination tanning for chrome-free leather based on reactive benzesulphonate and tannic acid Type de document : texte imprimé Auteurs : Yuanhang Xiao, Auteur ; Chunhua Wang, Auteur ; Jun Sang, Auteur ; Wei Lin, Auteur Année de publication : 2020 Article en page(s) : p. 16-22 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorption
Analyse quantitative (chimie)
Benzène sulfonate
Colorimétrie
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de chèvres
Mesure
pH -- Mesure
Photostabilité
Potentiel zeta
Taille des particules
Tanins
Tannage chrome free
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A non-pickling combination tanning based on reactive benzenesulphonate (rBS) and Tannic acid (TA) has been developed for the chrome-free leather manufacturing. By optimizing the tanning process, the two-bath combination tanning with 4% rBS and 10% TA at the final pH 3.0-3.5 can raise the shrinkage temperature (Ts) of goatskins to -86°C. Morphological analysis results reveal that the chrome-free leather exhibits a clear even grain surface and isolated collagen fiber network structure. The novel combination tanning approach not only improves light fastness, but also confers high physical and mechanical properties to the chrome-free leather which can meet the Chinese standard requirements for furniture leather and shoe upper leather. The non-pickling tanning without use of salt or acid is also benefit to clean leather-making production. Note de contenu : - EXPERIMENTS : Materials - Particle size determination of TA and rBS - Tanning process - Determination of shrinkage temperature - Measurement of the uptake of TA - Zeta potential measurements - SEM analysis - Determination of color difference - Physical and mechanical properties measurements
- RESULT AND DISCUSSION : Optimization of rBS and Ta combination tanning combination tanning methods - The dosage of rBS and TA - Final pH - Zeta potential analysis - The synergistic tanning mechanism of rBS and TA - Color difference analysisDOI : https://doi.org/10.34314/jalca.v115i1.1464 En ligne : https://drive.google.com/file/d/1l3B3xNVwSsBqCpy7R5W4NHysSxHHVE0P/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33393
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXV, N° 1 (01/2020) . - p. 16-22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21484 - Périodique Bibliothèque principale Documentaires Disponible A novel pre-tanning agent for high exhaustion chromium tannage / Luan Shifang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 4 (07-08/2007)
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Titre : A novel pre-tanning agent for high exhaustion chromium tannage Type de document : texte imprimé Auteurs : Luan Shifang, Auteur ; Liu Yan, Auteur ; Haojun Fan, Auteur ; Bi Shi, Auteur ; Duan Zhenji, Auteur Année de publication : 2007 Article en page(s) : p. 149-153 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
Agents de tannage
Cuirs et peaux -- Propriétés physiques
Epuisement des tanins
Groupement carboxyle
Oxazolidine
Prétannage
Tannage au chrome
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A pre-tanning agent (OXD) which contains carboxyl, hydroxyl and tetra-amino groups was synthesized and applied in high exhaustion chrome tannage. This pre-tanning agent is able to react with the pendent amino groups of collagen and thus improves the hydrothermal stability when the additional carboxyl, hydroxyl and amino groups are introduced into the backbone of collagen. In the tanning process, the introduced carboxyl groups and the intrinsic carboxyl groups themselves of collagen coordinate with chromium and form uni- or multi-point bound chromium complexes, which seems to contribute to the final leather’s excellent chromium combination fastness and high chrome exhaustion. In a practical tannage, hide or skin pre-tanned with 2wt% OXD-I followed by a traditional chromium tannage, the absorption of chromium increased from 70.6% to 96.5%, and the content of Cr2O3 in the wastewater decreased from 1.76g/L to 0.16g/L. The shrinkage temperature of the leather also shifted from 104°C to 114°C. In a comparison with traditional chromium tannage, leathers pretreated with OXD followed by a chromium tannage showed good fullness and higher area yield as well as higher chromium combination fastness. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and instruments - Tannage - Interaction between OXD and collagen - Coordination between OXD and chromium - Determination of the chromium combination fastness in leather - Physical properties of leather
- RESULTS AND DISCUSSION : Interaction between OXD-I and collagen - Co-ordination reaction between OXD-I and chromium - Effects of carboxyl groups of OXD on the exhaustion of chromium - Optimization techniques for OXD-I - Chromium combination fastness in leathers
- Table 1 : Effects of carboxyl groups of OXD on absorption of chrome and shrinkage temperature of leather
- Table 2 : Effect of OXD-I used as a pretannage and as a retannage on the exhaustion of chrome and leather performance
- Table 3 : Effect of dosage of OXD-I pretannage on exhaustion of chrome and Ts of leatherEn ligne : https://drive.google.com/file/d/1Pkwv8zNmUM_M4uObdG0xZ4XdcXtI3Yci/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39020
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 4 (07-08/2007) . - p. 149-153[article]Odour absorption from activated zinc ricinoleate / Yana Bykov in PERSONAL CARE EUROPE, Vol. 14, N° 2 (04/2020)
[article]
Titre : Odour absorption from activated zinc ricinoleate Type de document : texte imprimé Auteurs : Yana Bykov, Auteur ; Swetlana Vogt, Auteur ; Martina Spiegel, Auteur ; Maximilian Franke, Auteur ; Martin Husmann, Auteur Année de publication : 2020 Article en page(s) : p. 124-128 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
Cosmétiques
Déodorants
Formulation (Génie chimique)
Odeurs -- Lutte contre
Peau -- Soins et hygiène
Ricinoléate de zinc
Tests d'efficacitéIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Smell is one of the five most important senses (sight, hearing, touch and taste), allowing us to perceive life in its entirety. The perception of smell is a very complex process including the excitation of specialised receptors located in the human nasal cavity, and signal transmission to the brain. Smells are caused by volatile chemical compounds, which can often be recognised even when present in low concentrations.
Odour plays an important role in our lives. It evokes emotions and memories, changes cognitive and physical abilities, and of course affects relationships between people. For this reason, the problem of odours has been preoccupying scientists and industrial developers for many years.
We have to consider the subjective perception when talking about pleasant and unpleasant odours. Acceptance of unpleasant odours can be determined by averaging the opinion of the population. The main source of malodours are sulfur and nitrogen containing molecules, such as allicin – garlic, felinine - cat urine, hydrogen sulfide - rotten eggs, ammonia – urine, indole and skatole – fecal, cadaverine and putrescine – rotting flesh, nicotine – tobacco and so on. In addition, there are other odorous substances that are responsible, for example for smell of sweat - isovaleric acid, rancid oil - butanoic acid, tobacco smoke - acetaldehyde etc. In everyday life the number of unpleasant odours originated from non-sulfur and nonnitrogen containing molecules is very limited.
The most common solution to 'change' unpleasant odours is the use of fragrances. Such mixtures release a pleasant scent and are able to cover unpleasant odours. This masking is not always effective and after dispersing the fragrance, unpleasant odour molecules will be predominant in the atmosphere again.Note de contenu : - Odour absorbers
- Zinc ricinoleate
- Zinc ricinoleate activation
- A series of water-soluble odour absorber concentrates
- Performance tests
- Application fields
- Fig. 1 : Chemical formula of zinc ricinoleate
- Fig. 2 : Three-dimensional model of zinc ricinoleate molecule
- Fig. 3 : Molecular simulation of the interaction of zinc ricinoleate and MGDA
- Fig. 4 : Self-assembly of the complex on the surface of the solution
- Fig. 5 : Absorption of diethylamine (top) and ethanethiol (bottom) by 30% diluted solution of Polyfix ZRC 30 MT
- Fig. 6 : Absorption of hydrogen sulfide by two market products without and with the addition of 15% Polyfix ZRC 30 MT
- Fig. 7 : Efficiency (%) of 5% solutions of Polyfix ZRC 25 GP, Polyfix ZRC 30 MT and competitor's product regarding absorption of ammonia, hydrogen sulfide and acetic acid
- Fig. 8 : Efficiency (%) of deodorant roll-on "Perfect Polyfix" without and with Polyfix ZRC 25 GP and two market products containing zinc ricinoleate regarding absorption of ammonia, hydrogen sulfide and acetic acid
- Fig. 9 : Absorption of artificial sweat odour by 10% solution of Polyfix ZRC 25 GP. (Intensity : 6 - extremely strong, 5- very strong, 4 – strong, 3 – distinct, 2 - weak, 1 – very weak)
- Fig. 10 : Statistical survey with 24 male and female subjects about the effect of diluted Polyfix ZRC 30 MT on various odours - clockwise arrangement of odour intensity
- Table 1 : The Polyfix products range
- Table 2 : Basic formulation of deodorant roll-on "Perfect Polyfix" with Polyfix ZRC 25 GPEn ligne : https://drive.google.com/file/d/1AjmQIAh89axSuAZt1MRHsuDv-NjxWL8K/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33961
in PERSONAL CARE EUROPE > Vol. 14, N° 2 (04/2020) . - p. 124-128[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21621 - Périodique Bibliothèque principale Documentaires Disponible On-line determination of sulphide in tannery effluent by flow injection analysis / Yu Lan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 6 (11-12/2012)
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Titre : On-line determination of sulphide in tannery effluent by flow injection analysis Type de document : texte imprimé Auteurs : Yu Lan, Auteur ; Yu Lingyun, Auteur ; Zhang Xinshen, Auteur Année de publication : 2012 Article en page(s) : p. 256-260 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
AlizarineL'alizarine est un colorant rouge d'origine végétale, extrait de la racine de la garance des teinturiers (Rubia tinctorum L.), une plante vivace de la famille des Rubiacées, autrefois largement cultivée pour la teinture qu'elle fournissait.
Eaux usées -- Analyse
Eaux usées -- Teneur en ions sulfures
SpectrophotométrieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A simple and rapid spectrophotometric method for the determination of sulphide has been developed using flow injection analysis. The proposed method is based on the reducibility of sulphide ion towards alizarin red S resulting in an intense red complex with a suitable absorption peak at 515nm. The absorbance value of this compound is directly proportional to the concentration. Optimum conditions for determining sulphide were investigated by a univariate method. Under the optimum conditions for determining sulphide were investigated by a univariate method. Under the optimum conditions a linear calibration graph was obtained over the range 0.01-4.0mg l-1, the detection limit was 4.0µg l-1, the relative standard deviation was 1.04% (n=13) and the standard addition recovery was between 103.7 % and 106.0%. The method has been statisfactorily applied for the determination of sulphide in tannery effluents. Note de contenu : - EXPERIMENTAL PROCEDURES : Reagents and solutions - Apparatus - Recommended procedure
- RESULTS AND DISCUSSION : Choice of the detection wavelength - Preliminary investigation - Method validationEn ligne : https://drive.google.com/file/d/1XPjHGxfqxtejEazRX9Sa4CIg11o9T41n/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16810
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 6 (11-12/2012) . - p. 256-260[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14414 - Périodique Bibliothèque principale Documentaires Disponible Peintures et vernis. Détermination de la résistance aux liquides - Partie 2 : Méthode utilisant un milieu absorbant - Norme ISO 2812-3 / International Organization for Standardization (Genève, Suisse) / Geneve [Switzerland] : International Organization for Standardization (ISO) (2012)
Titre de série : Peintures et vernis Titre : Détermination de la résistance aux liquides - Partie 2 : Méthode utilisant un milieu absorbant - Norme ISO 2812-3 Type de document : texte imprimé Auteurs : International Organization for Standardization (Genève, Suisse) , Auteur Mention d'édition : 2e Edition Editeur : Geneve [Switzerland] : International Organization for Standardization (ISO) Année de publication : 2012 Importance : IV-7 p. Format : 30 cm Note générale : Annexe - Bibliogr. Catégories : Absorption
Essais de résilience
Liquides (Chimie)
Résistance chimique
Revêtements -- Normes:Peinture -- Normes
Vernis -- NormesIndex. décimale : 667.9 Revêtements et enduits Résumé : La présente partie de l'ISO 2812 spécifie une méthode, utilisant un milieu absorbant, pour déterminer la résistance d'un système de revêtement monocouche ou multicouche à l'action de liquides ou de produits pâteux.
Cette méthode permet aux opérateurs d'évaluer les effets de la substance d'essai sur le revêtement et, si nécessaire, d'évaluer la détérioration du subjectile.Classification ICS : 87.040 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30400 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19794 ISO 2812-3 Norme Bibliothèque principale Documentaires Disponible Peintures et vernis. Evaluation des propriétés des systèmes de revêtement liées au mode d'application - Partie 2 : Stabilité des couleurs, pouvoir masquent du procédé, détrempe, absorption des pertes de peinture à la pulvérisation, mouillage, texture superficielle et marbrures - Norme internationale ISO 28199-2 / International Organization for Standardization (Genève, Suisse) / Geneve [Switzerland] : International Organization for Standardization (ISO) (2009)
PermalinkPerformance of antimicrobial agents for the preservation of chrome leather / Juliana T. Fontoura in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 6 (06/2016)
PermalinkPerformance of flame retardants on leather / Huang Zan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 6 (11-12/2005)
PermalinkPhénomènes de transport et comportement à long terme / Anne Balquet in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 850 (07/2007)
PermalinkPhosphorus-nitrogen flame retardant waterborne polyurethane/graphene nanocomposite for leather retanning / Peikun Zhang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 5 (05/2018)
PermalinkPhotoinitiator design for waterborne UV systems / Stephen R. Postle in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4640 (04/2018)
PermalinkPhysical properties of Al-doped ZnO films deposited on nonwoven substrates by radio frequence magnetron sputtering / Bingyao Deng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 3 (09/2008)
PermalinkPowdered hide model for vegetable tanning II : hydrolyzable tannin / Eleanor M. Brown in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 1 (01/2015)
PermalinkPreparation and characterization of chitosan coatings onto regular cellulose fibers with ultrasound technique / Urška Vrabič Brodnjak in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 2 (03/2013)
PermalinkPreparation and characterization of polydimethylsiloxane containing cyano/phenyl groups for potential use in sorptive extraction / Miguel Angel Ávila-Martínez in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
PermalinkPropriétés cosmétiques et évaluation / Marc Pauly in PARFUMS COSMETIQUES ACTUALITES, N° 137 (11/1997)
PermalinkQuantitative determinations of isoelectric point of retanned leather and distribution of retanning agent / Ying Song in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 7 (07/2018)
PermalinkReliable analysis of cosmetic oil absorption / Carsten Stratmann in PERSONAL CARE EUROPE, Vol. 11, N° 4 (09/2017)
PermalinkRemoval of chromium (III) from tannery wastewaters with acidophilic fungi / Joana Lalueza in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 1 (01/2014)
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